Mobile telecoms firm O2 is launching a trial of near field communications (NFC) technology at a music festival later this month that will see select guests given a crystal-studded wristband embeded with the contactless technology.

The telco says it will use the NFC technology to manage entry into its backstage hospitality area at the O2 Wireless Festival in London’s Hyde Park later this month. Revellers wearing the wristband will be able to access the backstage area by swiping it past a NFC-enabled mobile phone.

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